Here is the problem with the 911 conspiracy theory's......

[cbrer]

128. Heck, we might as well argue here too right?

>"It was unrestrained thermal expansion causing girders to become unseated from columns, leading to buckling failure of one critical column, leading to progressive collapse of the entire structure."

Doesn't thermal expansion suggest that girders would expand further into their mounts on the columns, rather than becoming unseated? Or perhaps in an extreme example, suffer warpage due to exceeding available expansion space?

>"Well, surely you don't mean to suggest that if something never happened before, then it can't happen? Let me suggest that understanding why WTC7 collapsed requires understanding how it was put together and what was going on inside that building for seven hours. Since no similarly constructed building has suffered a similar unfought fire, the uniqueness of its collapse is completely unremarkable."

There have been similarly constructed buildings on fire. For longer, and hotter. They didn't collapse. YOU pointed me towards this research. Unless there were construction characteristics not in the articles. If so please share.